package baoxin.com.robotcoach.services;

import android.app.Service;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCallback;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothGattDescriptor;
import android.bluetooth.BluetoothGattService;
import android.bluetooth.BluetoothManager;
import android.bluetooth.BluetoothProfile;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.UUID;

import baoxin.com.robotcoach.utils.SampleGattAttributes;

/**
 * Service for managing connection and data communication with a GATT server hosted on a
 * given Bluetooth LE device.
 */
public class BluetoothLeService extends Service {
    private final static String TAG = BluetoothLeService.class.getSimpleName();

    private BluetoothManager mBluetoothManager;
    private BluetoothAdapter mBluetoothAdapter;
    private String lastDeviceAddress;
    private  BluetoothGatt mBluetoothGatt;


    public final static String ACTION_GATT_CONNECTED =
            "com.example.bluetooth.le.ACTION_GATT_CONNECTED";
    public final static String ACTION_GATT_DISCONNECTED =
            "com.example.bluetooth.le.ACTION_GATT_DISCONNECTED";
    public final static String ACTION_GATT_SERVICES_DISCOVERED =
            "com.example.bluetooth.le.ACTION_GATT_SERVICES_DISCOVERED";
    public final static String ACTION_DATA_AVAILABLE =
            "com.example.bluetooth.le.ACTION_DATA_AVAILABLE";
    public final static String EXTRA_DATA =
            "com.example.bluetooth.le.EXTRA_DATA";

    public final static UUID UUID_HEART_RATE_MEASUREMENT =
            UUID.fromString(SampleGattAttributes.HEART_RATE_MEASUREMENT);

    public static String Service_uuid = "0000ffe0-0000-1000-8000-00805f9b34fb";
    public static String Characteristic_uuid_TX = "0000ffe1-0000-1000-8000-00805f9b34fb";

    public  void enable_JDY_ble(boolean p) {

        try {
            if (p) {
                BluetoothGattService service = mBluetoothGatt.getService(UUID.fromString(Service_uuid));
                if (service == null) return;
                BluetoothGattCharacteristic ale;// =service.getCharacteristic(UUID.fromString(Characteristic_uuid_TX));
                switch (0) {
                    case 0://0xFFE1 //透传
                    {
                        ale = service.getCharacteristic(UUID.fromString(Characteristic_uuid_TX));
                    }
                    break;
                    case 1:// 0xFFE2 //iBeacon_UUID
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffe2-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 2://0xFFE3 //iBeacon_Major
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffe3-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 3://0xFFE4 //iBeacon_Minor
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffe4-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 4://0xFFE5 //广播间隔
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffe5-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 5://0xFFE6 //密码功能
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffe6-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 6:// 0xFFE7 //设备名功能
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffe7-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 7:// 0xFFE8 //IO输出功能功能
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffe8-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 8:// 0xFFE9 //PWM功能
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffe9-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 9:// 0xFFEA //复位模块
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffea-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 10:// 0xFFEB //发射功率
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffeb-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    case 11:// 0xFFEC //RTC功能
                    {
                        ale = service.getCharacteristic(UUID.fromString("0000ffec-0000-1000-8000-00805f9b34fb"));
                    }
                    break;
                    default:
                        ale = service.getCharacteristic(UUID.fromString(Characteristic_uuid_TX));
                        break;
                }
                boolean set = mBluetoothGatt.setCharacteristicNotification(ale, true);
                Log.d(TAG, " setnotification = " + set);
                BluetoothGattDescriptor dsc = ale.getDescriptor(UUID.fromString("00002902-0000-1000-8000-00805f9b34fb"));
                byte[] bytes = {0x01, 0x00};
                dsc.setValue(bytes);
                boolean success = mBluetoothGatt.writeDescriptor(dsc);
                Log.d(TAG, "writing enabledescriptor:" + success);
            } else {
                BluetoothGattService service = mBluetoothGatt.getService(UUID.fromString("49535343-fe7d-4ae5-8fa9-9fafd205e455"));
                BluetoothGattCharacteristic ale = service.getCharacteristic(UUID.fromString(Service_uuid));
                boolean set = mBluetoothGatt.setCharacteristicNotification(ale, false);
                Log.d(TAG, " setnotification = " + set);
                BluetoothGattDescriptor dsc = ale.getDescriptor(UUID.fromString(Characteristic_uuid_TX));
                byte[] bytes = {0x00, 0x00};
                dsc.setValue(bytes);
                boolean success = mBluetoothGatt.writeDescriptor(dsc);
                Log.d(TAG, "writing enabledescriptor:" + success);
            }

        } catch (NumberFormatException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();

        }
    }

    public static int get_connected_status(List<BluetoothGattService> gattServices) {
        final String LIST_NAME1 = "NAME";
        final String LIST_UUID1 = "UUID";
        String uuid = null;
        String unknownServiceString = "Unknown device";
        String unknownCharaString = "Unknown characteristic";
        ArrayList<HashMap<String, String>> gattServiceData = new ArrayList<HashMap<String, String>>();
        ArrayList<ArrayList<HashMap<String, String>>> gattCharacteristicData
                = new ArrayList<ArrayList<HashMap<String, String>>>();

        int count_char = 0;
        // Loops through available GATT Services.
        for (BluetoothGattService gattService : gattServices) {
            HashMap<String, String> currentServiceData = new HashMap<String, String>();
            uuid = gattService.getUuid().toString();
            currentServiceData.put(
                    LIST_NAME1, SampleGattAttributes.lookup(uuid, unknownServiceString));
            currentServiceData.put(LIST_UUID1, uuid);
            gattServiceData.add(currentServiceData);

            ArrayList<HashMap<String, String>> gattCharacteristicGroupData =
                    new ArrayList<HashMap<String, String>>();
            List<BluetoothGattCharacteristic> gattCharacteristics =
                    gattService.getCharacteristics();
            ArrayList<BluetoothGattCharacteristic> charas =
                    new ArrayList<BluetoothGattCharacteristic>();

            // Loops through available Characteristics.
            for (BluetoothGattCharacteristic gattCharacteristic : gattCharacteristics) {
                charas.add(gattCharacteristic);
                HashMap<String, String> currentCharaData = new HashMap<String, String>();
                uuid = gattCharacteristic.getUuid().toString();
                currentCharaData.put(
                        LIST_NAME1, SampleGattAttributes.lookup(uuid, unknownCharaString));
                currentCharaData.put(LIST_UUID1, uuid);
                gattCharacteristicGroupData.add(currentCharaData);
                count_char++;
            }
            //mGattCharacteristics.add(charas);
            gattCharacteristicData.add(gattCharacteristicGroupData);
        }
        return count_char;
    }


    // Implements callback methods for GATT events that the app cares about.  For example,
    // connection change and services discovered.
    private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() {
        @Override
        public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
            String intentAction;
            if (newState == BluetoothProfile.STATE_CONNECTED) {
                intentAction = ACTION_GATT_CONNECTED;
                broadcastUpdate(intentAction);
                Log.i(TAG, "Connected to GATT server.");
                // Attempts to discover services after successful connection.
                Log.i(TAG, "Attempting to start service discovery:" +
                        mBluetoothGatt.discoverServices());
                SharedPreferences sp = getSharedPreferences("DeviceInfo", MODE_PRIVATE);
                sp.edit().putString("address", lastDeviceAddress).commit();
            } else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
                intentAction = ACTION_GATT_DISCONNECTED;
                Log.i(TAG, "Disconnected from GATT server.");
                broadcastUpdate(intentAction);
            }
        }

        @Override
        public void onServicesDiscovered(BluetoothGatt gatt, int status) {
            if (status == BluetoothGatt.GATT_SUCCESS) {
                broadcastUpdate(ACTION_GATT_SERVICES_DISCOVERED);
            } else {
                Log.w(TAG, "onServicesDiscovered received: " + status);
            }
        }

        @Override
        public void onCharacteristicRead(BluetoothGatt gatt,
                                         BluetoothGattCharacteristic characteristic,
                                         int status) {
            if (status == BluetoothGatt.GATT_SUCCESS) {
                broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
            }
        }

        @Override
        public void onCharacteristicChanged(BluetoothGatt gatt,
                                            BluetoothGattCharacteristic characteristic) {
            broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
        }
    };

    private void broadcastUpdate(final String action) {
        final Intent intent = new Intent(action);
        sendBroadcast(intent);
    }

    private void broadcastUpdate(final String action,
                                 final BluetoothGattCharacteristic characteristic) {
        final Intent intent = new Intent(action);


        // This is special handling for the Heart Rate Measurement profile.  Data parsing is
        // carried out as per profile specifications:
        // http://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml
        if (UUID_HEART_RATE_MEASUREMENT.equals(characteristic.getUuid())) {
            int flag = characteristic.getProperties();
            int format = -1;
            if ((flag & 0x01) != 0) {
                format = BluetoothGattCharacteristic.FORMAT_UINT16;
                Log.d(TAG, "Heart rate format UINT16.");
            } else {
                format = BluetoothGattCharacteristic.FORMAT_UINT8;
                Log.d(TAG, "Heart rate format UINT8.");
            }
            final int heartRate = characteristic.getIntValue(format, 1);
            Log.d(TAG, String.format("Received heart rate: %d", heartRate));
            intent.putExtra(EXTRA_DATA, String.valueOf(heartRate));
        } else {
            //Baoxin Chin
            // For all other profiles, writes the data formatted in HEX.
            final byte[] data = characteristic.getValue();
            if (data != null && data.length > 0) {
                final StringBuilder builder = new StringBuilder(data.length);
                for (byte byteChar : data)
                    builder.append(String.format("%02X", byteChar));
                Log.i("mBluetooth", builder.toString());
                intent.putExtra(EXTRA_DATA, builder.toString());
            }
        }
        sendBroadcast(intent);
    }

    public class LocalBinder extends Binder {
        public BluetoothLeService getService() {
            return BluetoothLeService.this;
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        initialize();
        connect(lastDeviceAddress);
        return mBinder;
    }

    @Override
    public boolean onUnbind(Intent intent) {
        // After using a given device, you should make sure that BluetoothGatt.close() is called
        // such that resources are cleaned up properly.  In this particular example, close() is
        // invoked when the UI is disconnected from the Service.
 //       close();
        return super.onUnbind(intent);
    }

    private final IBinder mBinder = new LocalBinder();

    /**
     * Initializes a reference to the local Bluetooth adapter.
     *
     * @return Return true if the initialization is successful.
     */
    public boolean initialize() {
        SharedPreferences sp = getSharedPreferences("DeviceInfo", MODE_PRIVATE);
        lastDeviceAddress = sp.getString("address", null);
        // For API level 18 and above, get a reference to BluetoothAdapter through
        // BluetoothManager.
        if (mBluetoothManager == null) {
            mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
            if (mBluetoothManager == null) {
                Log.e(TAG, "Unable to initialize BluetoothManager.");
                return false;
            }
        }

        mBluetoothAdapter = mBluetoothManager.getAdapter();
        if (mBluetoothAdapter == null) {
            Log.e(TAG, "Unable to obtain a BluetoothAdapter.");
            return false;
        }

        return true;
    }

    /**
     * Connects to the GATT server hosted on the Bluetooth LE device.
     *
     * @param address The device address of the destination device.
     * @return Return true if the connection is initiated successfully. The connection result
     * is reported asynchronously through the
     * {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)}
     * callback.
     */
    public boolean connect(final String address) {
        if (mBluetoothAdapter == null || address == null) {
            Log.w(TAG, "BluetoothAdapter not initialized or unspecified address.");
            return false;
        }

        // Previously connected device.  Try to reconnect.
        if (lastDeviceAddress != null && address.equals(lastDeviceAddress)
                && mBluetoothGatt != null) {
            Log.d(TAG, "Trying to use an existing mBluetoothGatt for connection.");
            if (mBluetoothGatt.connect()) {
                return true;
            } else {
                return false;
            }
        }

        final BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
        if (device == null) {
            Log.w(TAG, "Device not found.  Unable to connect.");
            return false;
        }
        // We want to directly connect to the device, so we are setting the autoConnect
        // parameter to false.
        mBluetoothGatt = device.connectGatt(this, false, mGattCallback);
        Log.d(TAG, "Trying to create a new connection.");
        lastDeviceAddress = address;

        return true;
    }

    /**
     * After using a given BLE device, the app must call this method to ensure resources are
     * released properly.
     */
    public void close() {
        if (mBluetoothGatt == null) {
            return;
        }
        mBluetoothGatt.close();
        mBluetoothGatt = null;
    }

    /**
     * Retrieves a list of supported GATT services on the connected device. This should be
     * invoked only after {@code BluetoothGatt#discoverServices()} completes successfully.
     *
     * @return A {@code List} of supported services.
     */
    public  List<BluetoothGattService> getSupportedGattServices() {
        if (mBluetoothGatt == null) return null;

        return mBluetoothGatt.getServices();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }
}
